Thermal expansion of a composite with a hybrid granular-fibrous filler

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The thermal deformation of LDPE with a granular-fibrous filler was studied experimentally within a broad temperature range. We analyzed the effect of fillers on characteristics of relaxational transitions in LDPE as determined from dilatometric tests. A method was proposed for calculating the effective CLE of a composite with allowance for aggregation of a powdered filler and the statistical distributions of the length and orientation of the anisotropic fibers. The method was substantiated experimentally. Results were also presented of a theoretical analysis of the effect of the parameters of the fiber distributions f(l.) and Φ(θ, φ) and the relative volume contents of granular and fibrous fillers on αij for the composite. It was established that aggregation of the granular filler may produce a hybrid effect consisting of maximum suppression of thermal expansion of the binder by the combination filler relative to a two-component composite.

Original languageEnglish (US)
Pages (from-to)173-182
Number of pages10
JournalMechanics of Composite Materials
Issue number2
StatePublished - Mar 1989

ASJC Scopus subject areas

  • Ceramics and Composites
  • Biomaterials
  • Mathematics(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Polymers and Plastics

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